Add IWebHostBuilder.UseKestrel(options) overload to configure Kestrel

[mikeharder]

Copied from #713:

var host = new WebHostBuilder()
    .UseKestrel(options =>
     {
         options.NoDelay = true;
         options.ThreadCount = 4;
         options.UseHttps(...);
     })
    .UseStartup<StartupHelloWorld>()
    .Build();

host.Run();

We should also remove these as a result of this:

https://github.com/aspnet/KestrelHttpServer/blob/dev/src/Microsoft.AspNetCore.Server.Kestrel.Https/HttpsApplicationBuilderExtensions.cs

It clears up the fact that these aren't actually pieces of middleware but server configuration.

[DamianEdwards]

YES PLS RIGHT NOW LOVE IT

[davidfowl]

I did a test implementation and there are some problems around extension methods that require resolved services to configure. UseConnectionLogging() requires an ILoggerFactoryand UseHttps() and requires the base path to the x509cert.

[davidfowl]

Kestrel

• Add KestrelServerOptions and remove KestrelServerInformation
• Remove KestrelServerInformation from server features
• Add IServiceProvider to KestrelServerOptions
• Change UseKestrel() to add the IServerFactory to the container directly
• Add UseKestrel(Action<KestrelServerOptions>) which adds
• Change connection filter extension methods to extension methods on KestrelServerOptions